1-(3,4-Dihydro-4-oxo-3-quinazolinylmethyl)-3-piperidinoacetylurea tetrahydrochloride 70395-21-0 Urea, 1-(3,4-dihydro-4-oxo-3-quinazolinylmethyl)-3-piperidinoacetyl-, tetrahydrochloride